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  1. krd

    Gridlines print over cell contents

    Yes indeed, "Is the problem in the computer or the printer.." is what I'm hoping someone can shed some light on. A file I made on this computer months ago printed OK on printer #1 then and prints OK on printer #1 today. A file I just made on this same computer does not print OK on printer #1...
  2. krd

    Gridlines print over cell contents

    Thank you for your time. We have networked computers going to network printers. This problem is isolated to a few computers printing some, but not all files. I now find I can print a spread sheet on 11 x 17 paper OK but when I print to 8 1/2 x 11 paper the row grid lines print over the rows.
  3. krd

    Gridlines print over cell contents

    Nope, I've tried every formating option I can find. No change. Large spread sheets need grid lines to be readable. Maybe this is a file corruption issue.
  4. krd

    Gridlines print over cell contents

    Thanks IRstuff - but the problem is with the row lines, not column lines. It's as though a 12 pt font is being printed in a 10 pt row. At the top of the page the font fits in the row. Gradually as you go down the page the font prints a little higher unitl, by halfway down the page, the font is...
  5. krd

    Gridlines print over cell contents

    When I print some, but not all, Excel files the row gridlines get out of sync with the row contents so that halfway down the page the gridlines are running thru the row text. This is using page setup-sheet-gridlines. This does not show up on print preview. It happens regardless of which printer...
  6. krd

    Timber Lagging - Short term loading

    To account for arching, the design load on lagging can be approximated by using a triangular distribution: maximum soil pressure at the soldier pile reducing to zero at midspan of the lagging then increasing to maximum at the next soldier pile. Analyse as simple beam. If your calcs indicate...
  7. krd

    Effect of Vibration in Dense sand

    The rebar cage can only sink if the material at the bottom of the shaft is somehow losing it's bearing capacity. If the rebar only sinks when the vibro hammer is in use then one would certainly suspect the vibro. What is the pore pressure at depth? How sure are you that the SPT of 40 is uniform...
  8. krd

    Setting long reinforcing cage for drilled shaft

    PEinc, where I work we never rely on tie wire to hold shaft rebar cages together, we always use welded interior bracing designed to provide plenty of clearance for the concrete pump line and the bracing is never removed. CSL tubes are tied to the outer mat. If there is other instrumentation it...
  9. krd

    Setting long reinforcing cage for drilled shaft

    PEinc - what's the problem? The cage should be prefabricated with adequate internal bracing and picked and set into the shaft with cranes of sufficient capacity. Long rebar cages often require a 2 crane pick, more because they're too flimsy to be stood up vertical by a single crane than because...
  10. krd

    AWS Allowable Shear Stress Factor of Safety

    The factor of safety of weld metal would be 2.0, based on an ultimate shear strength of 0.6 x ultimate tensile strength of weld metal. The factor of safety of the joint may depend on the strength of base metal, depending on how the joint and welds are configured.
  11. krd

    Columbia tragedy

    Are there experts in this forum who might care to comment on the servicability of the shuttle heat shield design? Since the future of the shuttles will become a subject of public debate, and maybe even a vote in Congress, those of us who are not as well informed should try to get educated. It...
  12. krd

    Personal Liability

    BobPE, Mark10 sounds like a young engineer who is a little nervous about the ramifications of getting a PE so I was intending to reassure him that it's not as daunting as it might seem as long as you have the skills to do proper work and have confidence in your judgements. While all PE's should...
  13. krd

    Personal Liability

    Mark10, it would be frightening to be on a bridge or in a building during an earthquake if no one was responsible for the design. Like having your gall bladder removed and no one in the operating room feels responsible for the outcome. If you are confident that your engineering skills are good...
  14. krd

    Fall Protection

    jag001, What are "these types" of systems you're refering to? You wouldn't be considering personal fall protection I don't think. On concrete bridge decks we haven't found anything more cost effective than shooting down a 2 x 4 handrail.
  15. krd

    wire-wound vs tendon concrete tanks

    Mike80, prequalify the contractors who are allowed to bid. This may reduce competition and increase prices, but as you note, you may not want the cheapest price you could get with open bidding.
  16. krd

    Design by rule of thumb

    Time management for new engineers: "20% of your time will be spent on the design concept and general arrangement; 80% will be spent on details". I find the 20% is the fun part.
  17. krd

    Pump Runout condition?

    i8flipper, for centrifugal pumps in really general terms the torque is proportional to the mass of fluid being accelerated by the impeller blades. It takes more torque to move more mass. So as flow increases more work is done and more power consumed. Conversely, in theory, if there is no flow...
  18. krd

    cofferdams

    finegg, it depends on the depth of water and whether you need to excavate below the stream bed. If you just need to divert the stream to dry out a work area then a wall designed to withstand expected head and built on the stream bed would work. Search for "porta dam" on internet...
  19. krd

    Buoancy Calc in Wet Concrete

    sound789, as you and others have said, you can get a value for buoancy using unit wt of concrete times head, although I don't think your model proves the point. My point was that this value is conservative and is probably 50% more than the actual buoyant force, not considering vibrators. This...
  20. krd

    Caisson Drilling Rig Tipping Over

    As mentioned above there are all too many crane accidents and the causes are well documented. So you don't have a typical a crane accident? I wouldn't think you'd find many instances of drill rigs, crane mounted or otherwise, turning over. First, the equipment selected usually has plenty of...

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